Complementary angles total 90°.
The complement (or complementary angle) of 15° is 75° (90 - 15).
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The complement of a 15 degree angle is the angle that, when added to the original angle, equals 90 degrees. In this case, the complement of a 15 degree angle would be 75 degrees, as 15 + 75 = 90. Complementary angles are pairs of angles that add up to a right angle (90 degrees).
78 degree angle
a 10-degree angle
66 degree angle
A pair of complementary angles add up to 90 degrees. Therefore, the complement of a 70 degree angle is 90 - 70 = 20 degrees.
The complement of an angle is 90 degrees minus the angle 90-57 = 33 degrees